October 1, 2012
Happy October
Physics
Bellwork:
1. A plane flying with a horizontal velocity of 240 m/s drops a package from a vertical height of 4500
meters. Determine the amount of time that the package dropped and the horizontal distance it traveled
prior to striking the ground.
2. A careless person drops a cup from his car window while driving. If the person where driving with a constant velocity of 45 m/s and the cup fell for a time of 0.8 seconds, how high was the cup dropped
from and how far did it travel from the initial point of drop.
Hand in the projectile motion lab and one page write-up on balloon launch.
Check and go over the projectile motion problems.
Discuss projectile motion method of solving problems.
HW: Additional Practice Problems on Projectile Motion
**Quiz on Wed.**
Physical Science A
Bellwork:
1. What are the two types of friction? Explain each.
2. Which type of friction seems to be larger, i.e. which requires that largest amount of force to
overcome?
3. Draw a velocity vs. time graph that shows an object
a. traveling at a constant velocity
b. increasing velocity, constant acceleration.
4. What is the acceleration of a student who realizes that he will be late to first hour if he take off from
his locker and reaches a speed of 4.5 m/s in a time of 9 seconds?
Objective:
1. List and describe the typical force that you experience and interact with on a daily basis.
2. Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).
3. Describe the different types of friction and how they affect the motion of an object.
Discuss, check, and go over the friction lab.
Check and go over the 2nd law of motion problems. Use the whiteboards to check.
Discuss the 2nd Law of motion and the force of gravity.
Scavenger Hunt: Each group will have a list of clues. You will have to guess what the object is and use the scale in the room to measure the mass of the object. Once you have the mass, you will use this information to calculate force of gravitational attraction between you and the object.
HW: Finish the calculations from the scavenger hunt.
Sunday, September 30, 2012
Friday, September 28, 2012
Sept. 28, 2012
Physical Science A
Bellwork:
1. What is friction and how does it affect the motion on an object?
2. Explain an give examples of Newton's 1st and 2nd Laws.
Objectives:
1. List and describe the typical force that you experience and interact with on a daily basis.
2. Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).
3. Describe the different types of friction and how they affect the motion of an object.
Check and go over the homework(newton's second law of motion). Use the whiteboards.
Continue discussing Newton's Second Law
Lab: Friction
HW: Finish the 2nd Law of Motion problems. Finish the lab questions.
Physics
-Hand in the projectile motion lab.
Today is balloon launch day. You will use your knowledge of projectiles, velocity, and angles to find the range of the launchers.
Formulas to keep in mind:
Vf=Vi+gt
Vf2=Vi2+2gd
d=Vit+(.5)gt2
**Need to keep the velocity the same!**
**Maximum Range is at angle of 45o**
Each group will receive two balloons, one to determine the range, one for testing. At 12:35 we will take the class, the balloons, and the launcher out to the practice field and test.
Closest to the target wins!!!!
HW: Projectile motion problems.
We will have a short test on Wed. next week.
Physical Science A
Bellwork:
1. What is friction and how does it affect the motion on an object?
2. Explain an give examples of Newton's 1st and 2nd Laws.
Objectives:
1. List and describe the typical force that you experience and interact with on a daily basis.
2. Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).
3. Describe the different types of friction and how they affect the motion of an object.
Check and go over the homework(newton's second law of motion). Use the whiteboards.
Continue discussing Newton's Second Law
Lab: Friction
HW: Finish the 2nd Law of Motion problems. Finish the lab questions.
Physics
-Hand in the projectile motion lab.
Today is balloon launch day. You will use your knowledge of projectiles, velocity, and angles to find the range of the launchers.
Formulas to keep in mind:
Vf=Vi+gt
Vf2=Vi2+2gd
d=Vit+(.5)gt2
**Need to keep the velocity the same!**
**Maximum Range is at angle of 45o**
Each group will receive two balloons, one to determine the range, one for testing. At 12:35 we will take the class, the balloons, and the launcher out to the practice field and test.
Closest to the target wins!!!!
HW: Projectile motion problems.
We will have a short test on Wed. next week.
Wednesday, September 26, 2012
Sept. 27, 2012
Physical Science A
Quick Quiz. Let's see who is studying.
Bellwork:
1. What is the acceleration of an object that accelerates from rest to a velocity of 88 m/s in a time of 11 seconds. If the acceleration of the object were constant, what would the graph of this motion look like?
2. If an object falls from a resting position and reaches a speed of 23 m/s just before it strikes the
ground, what is the time required for the object to strike the ground(remember that acceleration due to
gravity here on Earth is 9.8 m/s2)?
3. Describe the shape of a velocity vs. time graph that:
-shows an object traveling at a constant velocity
-shows an object traveling with an increasing velocity.
Objectives:
1. List and describe the typical force that you experience and interact with on a daily basis.
2. Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of
everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).
Go over the homework.
Discuss Newton's First and Second Law's of Motion
Demo, loop and washer, tablecloth, block and string. Discuss
Hand out and explain 2nd law problems.
HW: finish Newton's Second Law Problems
Physics
Today we will switch groups. If you collected data yesterday, you should work on the projectile motion problems today and vice versa.
At 12:45, we will stop. Everyone should have there calculations set. I will set out the ramp for the launchers. Each group will have the opportunity to fire one shot and see if they are on target with their calculations. The team closest to the target wins.
At the end of the hour each group should pick up the "Right on Target" paper. You will work in groups and as a class to determine the range of the water balloon shot from the sling shot. The group closest to the target wins.
The sling shot competition will take place on Friday(hopefully).
HW: Everyone should finish their summary question from the lab. Also, discuss with your groups how to determine the initial velocity of the launcher.
Physical Science A
Quick Quiz. Let's see who is studying.
Bellwork:
1. What is the acceleration of an object that accelerates from rest to a velocity of 88 m/s in a time of 11 seconds. If the acceleration of the object were constant, what would the graph of this motion look like?
2. If an object falls from a resting position and reaches a speed of 23 m/s just before it strikes the
ground, what is the time required for the object to strike the ground(remember that acceleration due to
gravity here on Earth is 9.8 m/s2)?
3. Describe the shape of a velocity vs. time graph that:
-shows an object traveling at a constant velocity
-shows an object traveling with an increasing velocity.
Objectives:
1. List and describe the typical force that you experience and interact with on a daily basis.
2. Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of
everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).
Go over the homework.
Discuss Newton's First and Second Law's of Motion
Demo, loop and washer, tablecloth, block and string. Discuss
Hand out and explain 2nd law problems.
HW: finish Newton's Second Law Problems
Physics
Today we will switch groups. If you collected data yesterday, you should work on the projectile motion problems today and vice versa.
At 12:45, we will stop. Everyone should have there calculations set. I will set out the ramp for the launchers. Each group will have the opportunity to fire one shot and see if they are on target with their calculations. The team closest to the target wins.
At the end of the hour each group should pick up the "Right on Target" paper. You will work in groups and as a class to determine the range of the water balloon shot from the sling shot. The group closest to the target wins.
The sling shot competition will take place on Friday(hopefully).
HW: Everyone should finish their summary question from the lab. Also, discuss with your groups how to determine the initial velocity of the launcher.
Tuesday, September 25, 2012
Sept. 26, 2012
Physical Science A
Bellwork:
1. Draw the following graphs of velocity vs. time:
a. increasing velocity, constant acceleration
b. Decreasing velocity, constant acceleration
c. Constant velocity
2. Explain how to determine the total distance traveled using a velocity time graph.
3. A rocket takes off from the launch pad and reaches a velocity of 540 m/s in a time of 15 seconds.
What is the acceleration of the rocket?
4. Using your idea and understanding of acceleration, explain a possible reason as to why people may
get sea sick on boats?
Objectives:
1. List and describe the typical force that you experience and interact with on a daily basis.
2. Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of
everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).
Go over the homework. Discuss any issues with the velocity vs. time graphs.
Begin discussing forces.
HW: Free body diagrams.
Physics
Bellwork:
1. For the following initial velocities calculate the x and y components (horizontal and vertical):
a. 40 m/s at angle of 23 degrees to the vertical
b. 1500 m/s at an angle of 50 degrees to the vertical
c. 500 m/s at an angle of 75 degrees to the vertical
Check and go over the prelab.
Discuss the method of the lab. Half the class will work on the projectile motion problems and the other half will work on the lab. Tomorrow the groups will switch.
Lab Groups: Work on the projectile motion lab. The first part of lab is asking you to derive the formulas that you will need to finish the lab. These formulas are your standard formulas that you have been working with up to this point, only now we are applying the variables that specific to what we need to do.
Secondly, you will use your formulas to calculate the initial velocities and eventually the range of the projectiles. Once you have obtained your launcher, be careful, if you shoot yourself, IT HURTS!
Problem Groups: We will go back over projectile motion. Discuss the formulas. Go over a few mathematical examples. Begin working on the problems from the packet. Utilize this time with a smaller group to ask questions and discuss problem areas.
Physical Science A
Bellwork:
1. Draw the following graphs of velocity vs. time:
a. increasing velocity, constant acceleration
b. Decreasing velocity, constant acceleration
c. Constant velocity
2. Explain how to determine the total distance traveled using a velocity time graph.
3. A rocket takes off from the launch pad and reaches a velocity of 540 m/s in a time of 15 seconds.
What is the acceleration of the rocket?
4. Using your idea and understanding of acceleration, explain a possible reason as to why people may
get sea sick on boats?
Objectives:
1. List and describe the typical force that you experience and interact with on a daily basis.
2. Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of
everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).
Go over the homework. Discuss any issues with the velocity vs. time graphs.
Begin discussing forces.
HW: Free body diagrams.
Physics
Bellwork:
1. For the following initial velocities calculate the x and y components (horizontal and vertical):
a. 40 m/s at angle of 23 degrees to the vertical
b. 1500 m/s at an angle of 50 degrees to the vertical
c. 500 m/s at an angle of 75 degrees to the vertical
Check and go over the prelab.
Discuss the method of the lab. Half the class will work on the projectile motion problems and the other half will work on the lab. Tomorrow the groups will switch.
Lab Groups: Work on the projectile motion lab. The first part of lab is asking you to derive the formulas that you will need to finish the lab. These formulas are your standard formulas that you have been working with up to this point, only now we are applying the variables that specific to what we need to do.
Secondly, you will use your formulas to calculate the initial velocities and eventually the range of the projectiles. Once you have obtained your launcher, be careful, if you shoot yourself, IT HURTS!
Problem Groups: We will go back over projectile motion. Discuss the formulas. Go over a few mathematical examples. Begin working on the problems from the packet. Utilize this time with a smaller group to ask questions and discuss problem areas.
Monday, September 24, 2012
Sept. 25, 2012
Physical Science A
Bellwork:
1. Explain the controls found within a car that can cause acceleration.
2. Consider a situation where a car is traveling around a corner with a constant speed. Is the car
accelerating? Explain.
3. A car takes off from a stop sign and accelerate to a velocity of 45 m/s in a time of 10 seconds.
What is the acceleration of the car?
Objectives:
- Be able to calculate the acceleration of an object given the change in velocity and time.
- Describe the motion of an object given a velocity vs. time graph.
Go over the acceleration problems using the white boards. Discuss any difficult problems.
Discuss velocity vs. time graphs. Begin discussing forces.
HW: Finish graphing activity
Physics
Bellwork:
1. Consider a situation where to students are pushing on a table. One pushes on the front the other
pushes on the side. Describe the resulting motion of the table as a result of both students.
2. If a swimmer were to swim across a river with a swift current, what would the resulting motion of the swimmer look like?
Collect determining height activity.
Discuss projectiles, projectile motion, and components.
Go over vector problems.
Explain the kinematic formulas using x and y components.
HW: Finish the projectile motion packet problems.
Physical Science A
Bellwork:
1. Explain the controls found within a car that can cause acceleration.
2. Consider a situation where a car is traveling around a corner with a constant speed. Is the car
accelerating? Explain.
3. A car takes off from a stop sign and accelerate to a velocity of 45 m/s in a time of 10 seconds.
What is the acceleration of the car?
Objectives:
- Be able to calculate the acceleration of an object given the change in velocity and time.
- Describe the motion of an object given a velocity vs. time graph.
Go over the acceleration problems using the white boards. Discuss any difficult problems.
Discuss velocity vs. time graphs. Begin discussing forces.
HW: Finish graphing activity
Physics
Bellwork:
1. Consider a situation where to students are pushing on a table. One pushes on the front the other
pushes on the side. Describe the resulting motion of the table as a result of both students.
2. If a swimmer were to swim across a river with a swift current, what would the resulting motion of the swimmer look like?
Collect determining height activity.
Discuss projectiles, projectile motion, and components.
Go over vector problems.
Explain the kinematic formulas using x and y components.
HW: Finish the projectile motion packet problems.
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